🧠 Daily Study Log [2025-09-18]
Explored body-type matched exercise idea, reviewed reverse process in diffusion models, and advanced variable engineering & crisis labeling in the Big Contest 2025 project.

💡 Idea

• Proposed a new fitness idea: Body-Match Exercise
• Concept: Different body types may have exercises that fit better or feel more natural.
• Goal: Explore matching frameworks between body composition and exercise types.

📖 Paper Study

• Continued study of Denoising Diffusion Probabilistic Models (DDPM).
• Day 3 – Reverse Process (Denoising)
  • Focused on modeling the reverse probability distribution.
  • Learned how a neural network approximates the intractable reverse step by predicting noise.
  • Training reduces to a simple MSE objective, making diffusion models stable and effective.

🏆 Competition – Big Contest 2025

• Progressed into Week 2 (Variable Engineering & Crisis Definition).
• Tasks completed:
  • Designed time-series derived features (lags, moving averages, growth rates).
  • Defined and labeled crisis stages (normal, risk, closure).
  • Added demographic and commercial area features.
  • Finalized dataset structure for next week’s modeling phase.

✅ TL;DR

📍 New fitness idea: body-type & exercise matching
📍 Studied reverse (denoising) process in DDPM
📍 Engineered variables & defined crisis labels for Big Contest 2025 project